Figure 2

FESEM photograph of salicylic acid (SA) and Salvia leriifolia seed. (A) Salicylic acid, (B) salicylic acid nanoparticles (nano-SA), (C) uncoated S. leriifolia seed (cold plasma-free) and (D) uncoated S. leriifolia seed exposed to cold plasma (100 W, 240 S).